IMI Defense Polymer M-Lok Rail Cover - Set Of 4 FDE. This product improves weapon control and SLOT protection by providing an any-slip surface. Easily cut for custom lengths each panel fits 5 M-LOK SLOTS. Set of 4 M-Lok Rail Covers. Specifications for IMI Defense Polymer M-Lok Rail Cover - Set Of 4: Manufacturer: IMI Defense Fabric/Material: Polymer Weight: 140 g Features of IMI Defense Polymer M-Lok Rail Cover - Set Of 4 Made of high-quality flexible material Durable highly resistant (cleaning Oils mud weather) Fast assembly/disassembly Low profile fit Fits M-LOK Set of 4 M-Lok Rail Covers Package Contents: IMI Defense Polymer M-Lok Rail Cover - Set Of 4 IMI Defense IMI-ZMRCFDE: Polymer M-Lok Rail Cover - Set Of 4 FDE